views:

51

answers:

2

I've develop webmail client for any mail server, I want to implement message conversion for it, for example same emails fwd/reply/reply2all should be shown together like gmail does...

my question is whats the key to find those emails which are either reply/fwd or related to the original mail....

+2  A: 

Google just seems to chain messages based on the subject line (so does Apple Mail by the way.)

Powertieke
Which is why you should never change the subject line unless you want to create a different conversation.
Wayne Werner
+2  A: 

The In-Reply-To header of the child should have the value of the Message-Id header of the parent(s).

Ignacio Vazquez-Abrams